Move WriteFile and WriteFileDescriptor from file_util to base namespace.

base/process/process_linux.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/process/process.h"
 
 #include <errno.h>
 #include <sys/resource.h>
 
 #include "base/file_util.h"
@@ skipping 77 matching lines @@
 
 bool Process::SetProcessBackgrounded(bool background) {
   DCHECK(process_);
 
 #if defined(OS_CHROMEOS)
   if (cgroups.Get().enabled) {
     std::string pid = StringPrintf("%d", process_);
     const base::FilePath file =
         background ?
             cgroups.Get().background_file : cgroups.Get().foreground_file;
-    return file_util::WriteFile(file, pid.c_str(), pid.size()) > 0;
+    return base::WriteFile(file, pid.c_str(), pid.size()) > 0;
   }
 #endif // OS_CHROMEOS
 
   if (!CanBackgroundProcesses())
     return false;
 
   int priority = background ? kBackgroundPriority : kForegroundPriority;
   int result = setpriority(PRIO_PROCESS, process_, priority);
   DPCHECK(result == 0);
   return result == 0;
@@ skipping 19 matching lines @@
   if (cgroups.Get().enabled)
     return true;
 #endif
 
   static LazyInstance<CheckForNicePermission> check_for_nice_permission =
       LAZY_INSTANCE_INITIALIZER;
   return check_for_nice_permission.Get().can_reraise_priority;
 }
 
 }  // namespace base